Self-interference avoidance method and apparatus, and measurement result sending method and apparatus

Abstract

A self-interference avoidance method is performed by a network side device. The method includes: determining a carrier combination with potential self-interference, wherein the carrier combination comprises a first carrier subjected to interference and a second carrier causing interference; sending a downlink reference signal on the first carrier; instructing a terminal to change uplink transmission power on the second carrier; receiving a first measurement result and a second measurement result reported by the terminal, wherein the first measurement result includes a measurement result determined by the terminal by measuring the downlink reference signal before changing the uplink transmission power, and the second measurement result includes a measurement result determined by measuring the downlink reference signal after changing the uplink transmission power; and determining whether to perform self-interference avoidance according to the first measurement result and the second measurement result.

1 . A self-interference avoidance method, performed by a network side device, comprising:
 determining a carrier combination with potential self-interference, wherein the carrier combination comprises a first carrier subjected to interference and a second carrier causing interference;   sending a downlink reference signal on the first carrier;   instructing a terminal to change uplink transmission power on the second carrier;   receiving a first measurement result and a second measurement result reported by the terminal, wherein the first measurement result comprises a measurement result determined by the terminal by measuring the downlink reference signal before changing the uplink transmission power, and the second measurement result comprises a measurement result determined by measuring the downlink reference signal after changing the uplink transmission power; and   determining whether to perform self-interference avoidance according to the first measurement result and the second measurement result.   
     
     
         2 . The method according to  claim 1 , wherein before sending the downlink reference signal on the first carrier, the method further comprises:
 sending a configuration of the downlink reference signal to the terminal.   
     
     
         3 . The method according to  claim 2 , wherein sending a configuration of the downlink reference signal to the terminal comprises:
 sending the configuration of the downlink reference signal to the terminal in response to the terminal being capable of determining and reporting the first measurement result and the second measurement result.   
     
     
         4 . The method according to  claim 1 , wherein performing self-interference avoidance comprises at least one of:
 instructing the terminal to communicate on a second carrier combination other than the carrier combination;   instructing the terminal that a configuration of the carrier combination is cancelled;   instructing the terminal to reduce the uplink transmission power on the second carrier; or   increasing downlink transmission power on the first carrier.   
     
     
         5 . The method according to  claim 1 , wherein determining whether to perform self-interference avoidance according to the first measurement result and the second measurement result comprises:
 determining whether to perform the self-interference avoidance according to a difference between the second measurement result and the first measurement result.   
     
     
         6 . The method according to  claim 5 , wherein determining whether to perform the self-interference avoidance according to a difference between the second measurement result and the first measurement result comprises:
 performing the self-interference avoidance when the difference is greater than a first threshold.   
     
     
         7 . The method according to  claim 5 , wherein the first measurement result comprises a first received signal strength indication (RSSI), and the second measurement result comprises a second RSSI; or
 the first measurement result comprises a first reference signal receiving quality (RSRQ), and the second measurement result comprises a second RSRQ.   
     
     
         8 . The method according to  claim 1 , wherein determining whether to perform self-interference avoidance according to the first measurement result and the second measurement result comprises:
 performing the self-interference avoidance in response to receiving the first measurement result and the second measurement result.   
     
     
         9 . The method according to  claim 8 , wherein the first measurement result and the second measurement result respectively comprise at least one of:
 a difference between RSSI and reference signal receiving power (RSRP); or   an RSRQ.   
     
     
         10 . A measurement result sending method, performed by a terminal, comprising:
 receiving a downlink reference signal on a first carrier configured in a carrier combination by a network side device;   changing uplink transmission power on a second carrier in the carrier combination according to an instruction of the network side device;   determining a first measurement result by measuring the downlink reference signal before changing the uplink transmission power, and determining a second measurement result by measuring the downlink reference signal after changing the uplink transmission power; and   sending the first measurement result and the second measurement result to the network side device.   
     
     
         11 . The method according to  claim 10 , wherein before receiving the downlink reference signal on the first carrier, the method further comprises:
 receiving a configuration of the downlink reference signal sent by the network side device.   
     
     
         12 . The method according to  claim 11 , wherein before receiving the configuration of the downlink reference signal sent by the network side device, the method further comprises:
 sending capability indication information to the network side device, wherein the capability indication information indicates whether the terminal has the capability to determine and report the first measurement result and the second measurement result.   
     
     
         13 . The method according to  claim 10 , wherein sending the first measurement result and the second measurement result to the network side device comprises:
 sending the first measurement result and the second measurement result to the network side device; or,   sending a difference between the second measurement result and the first measurement result to the network side device.   
     
     
         14 . The method according to  claim 13 , wherein
 the first measurement result comprises a first received signal strength indication (RSSI), and the second measurement result comprises a second RSSI; or   the first measurement result comprises a first reference signal receiving quality (RSRQ), and the second measurement result comprises a second RSRQ.   
     
     
         15 . The method according to  claim 10 , wherein sending the first measurement result and the second measurement result to the network side device comprises:
 determining a correlation between the first measurement result and the second measurement result with the uplink transmission power; and   sending the first measurement result and the second measurement result to the network side device when the correlation satisfies a preset relationship.   
     
     
         16 . The method according to  claim 15 , wherein sending the first measurement result and the second measurement result to the network side device when the correlation satisfies a preset relationship comprises:
 sending the first measurement result and the second measurement result to the network side device when the correlation satisfies a preset relationship and a difference between RSSI and RSRP determined by measuring the downlink reference signal is greater than a reference threshold, wherein the first measurement result comprises a first difference between the RSSI and the RSRP determined according to the downlink reference signal before changing the uplink transmission power, and the second measurement result comprises a second difference between the RSSI and the RSRP determined according to the downlink reference signal after changing the uplink transmission power; or,   sending the first measurement result and the second measurement result to the network side device when the RSRQ determined by measuring the downlink reference signal is less than a set threshold, wherein the first measurement result comprises a third RSRQ determined by measuring the downlink reference signal before changing the uplink transmission power, and the second measurement result comprises a fourth RSRQ determined by measuring the downlink reference signal after changing the uplink transmission power.   
     
     
         17 . The method according to  claim 15 , wherein the first measurement result comprises a first difference between RSSI and RSRP determined according to the downlink reference signal before changing the uplink transmission power, the second measurement result comprises a second difference between RSSI and RSRP determined according to the downlink reference signal after changing the uplink transmission power, and the preset relationship is a positive correlation;
 determining a correlation between the first measurement result and the second measurement result with the uplink transmission power comprises:   when reducing the uplink transmission power, in response to determining that the first difference is greater than the second difference, determining that the first measurement result and second measurement result are positively correlated with the uplink transmission power; and   when increasing the uplink transmission power, in response to determining that the first difference is less than the second difference, determining that the first measurement result and second measurement result are positively correlated with the uplink transmission power.   
     
     
         18 . The method according to  claim 15 , wherein the first measurement result comprises a third RSRQ determined by measuring the downlink reference signal before changing the uplink transmission power, and the second measurement result comprises a fourth RSRQ determined by measuring the downlink reference signal after changing the uplink transmission power, and the preset relationship is a negative correlation;
 determining a correlation between the first measurement result and the second measurement result with the uplink transmission power comprises:   when reducing the uplink transmission power, in response to determining that the third RSRQ is less than the fourth RSRQ, determining that the first measurement result and second measurement result are negatively correlated with the uplink transmission power; and   when increasing the uplink transmission power, in response to determining that the third RSRQ is greater than the fourth RSRQ, determining that the first measurement result and second measurement result are negatively correlated with the uplink transmission power.   
     
     
         19 . (canceled) 
     
     
         20 . (canceled) 
     
     
         21 . A communication apparatus, comprising:
 a processor; and   a memory for storing a computer program executable by the processor;   wherein the processor is configured to:   determine a carrier combination with potential self-interference, wherein the carrier combination comprises a first carrier subjected to interference and a second carrier causing interference;   send a downlink reference signal on the first carrier;   instruct a terminal to change uplink transmission power on the second carrier;   receive a first measurement result and a second measurement result reported by the terminal, wherein the first measurement result comprises a measurement result determined by the terminal by measuring the downlink reference signal before changing the uplink transmission power, and the second measurement result comprises a measurement result determined by measuring the downlink reference signal after changing the uplink transmission power; and   determine whether to perform self-interference avoidance according to the first measurement result and the second measurement result.   
     
     
         22 . A communication apparatus, comprising:
 a processor; and   a memory for storing a computer program executable by the processor;   wherein the processor is configured to perform the measurement result sending method according to  claim 10 .   
     
     
         23 . (canceled) 
     
     
         24 . (canceled)